-
公开(公告)号：US5022926A
公开(公告)日：1991-06-11
申请号：US353231
申请日：1989-05-18
IPC分类号： C09K15/06 , C02F5/08 , C02F5/10 , C02F5/12 , C02F5/14 , C09K15/08 , C09K15/14 , C09K15/20 , C09K15/24 , C09K15/26 , C23F11/12 , C23G1/24
摘要： A method of removing iron contaminants in an aqueous system by introducing and maintaining within the system at least one ortho dihydroxyaromatic compound having at least one electron withdrawing group pendant from the aromatic ring and, further, a method of inhibiting calcium scale formation in the presence of iron contaminants by utilizing at least one dehydroxyaromatic compound in combination with calcium scale inhibitors.
-
公开(公告)号：US4935205A
公开(公告)日：1990-06-19
申请号：US206154
申请日：1988-06-10
IPC分类号： C09K15/08 , C09K15/12 , C09K15/14 , C23F11/08 , C23F11/10 , C23F11/12 , C23F11/14 , C23F11/16
CPC分类号： C23F11/122 , C23F11/08 , C23F11/10 , C23F11/124 , C23F11/147 , C23F11/16 , Y10S507/939
摘要： A method of inhibiting corrosion of iron or iron-based alloys which are in contact with an aqueous system by introducing and maintaining within the system at least one ortho dihydroxyaromatic compound having at least one electron withdrawing group pendant from the aromatic ring.
-
公开(公告)号：US5183573A
公开(公告)日：1993-02-02
申请号：US733527
申请日：1991-07-22
申请人： Robert P. Kreh , Wayne L. Henry
发明人： Robert P. Kreh , Wayne L. Henry
摘要： A process for preventing or removing calcium and rust scale deposits from surfaces which are in contact with aqueous systems comprising adding to the aqueous system 3,5-bis(di-N,N-(carboxymethyl)aminomethyl)-4-hydroxybenzenesulfonic acid in an amount effective to remove the scale and rust deposits.
-
-
搜索结果
3 条记录 (耗时 0.024 秒)
